The Siemens 6ES7321-7BH01-0AB0 is a 16-channel, 24V DC digital input module for SIMATIC S7-300 PLCs. It features advanced diagnostics, process interrupts, and isochronous mode for precise and reliable industrial automation.
The Siemens 6ES7321-7BH01-0AB0 is a high-performance SM 321 digital input module. It serves the SIMATIC S7-300 PLC series specifically. This unit features 16 discrete input channels for 24V DC signals. Furthermore, it bridges field devices and the central controller with high reliability. It accepts signals from proximity switches, limit switches, and pushbuttons. This module ensures stable data acquisition in complex industrial environments.
| Feature | Specification |
| Manufacturer | Siemens |
| Order Number | 6ES7321-7BH01-0AB0 |
| Input Channels | 16 Digital Inputs |
| Rated Voltage | 24V DC |
| Isolation | Optocoupler Electrical Isolation |
| Front Connector | 20-pin Connector Required |
| Diagnostic Support | Wire Break and External Supply Faults |
| Interrupts | Supports Process and Diagnostic Interrupts |
| Weight | Approx. 0.95 kg |
This hardware offers more than simple signal detection. It supports isochronous mode for high-speed, synchronized machine cycles. Consequently, it excels in motion control applications. The module also features extensive diagnostic alarms. These alarms notify the system of wire breaks or missing supply voltages. Because it uses electrical isolation, it protects the PLC from field-side voltage spikes. These features collectively minimize unexpected system downtime.
We are committed to protecting your privacy. The information collected here is strictly used to provide the requested quotes, technical support, and relevant industrial automation solutions.